As
of now CM cancelled the June 1 update. Lets just wait for official
announcements with regards to the official starting date of the upgrade.
See what CM said on their official Facebook fan page -May 31 2013, 6:45PM

---- All of CM Flare fans are so excited (even me) with the improvement
results of having a Flare update. We have new versions of leaked
screenshots that were posted previously here

The new user interface of Notifications now added with a total of 6 toggle buttons from a 7 toggles buttons, the Silent/vibrate toggle has been removed

New UI of Camera App

We all hoped for the panorama effect but much to our dismay it is
noticeably missing this feature. The dual camera shot feature (the third
icon from the uppermost right), which is present in Flame 2.0 is now
available here. Good thing that the Force Close issue might be resolved
after the upgrade.

The Messaging App has a fresh look however the Send 1 and Send 2
buttons are still there, which occupies a little bit of its space.

A more concise connection mode clearly defines each of the features function when you try to connect your phone on a PC.

New Jellybean Lockscreen

Settings App

The New App drawer UI is now transparent, and the icons were replaced by Square-like icon, unlike rounded edges on ICS.

New Screenshots, but some answers are still unanswered.One user posted his screenshots on the official group of CM Flare that he has already
updated his phone on a CM Service center located at Puregold Taguig. At that time, he tried to update his phone to JB, and he did not fail,
SC accepted his phone he left it for an hour and when he got back his
unit, VOILA! it is already updated to JB. And
as expected Many flare users asked to have it run on benchmark tests, to
identify bugs like multi-touch and camera force close issue, test RAM
usage, gaming performance, battery and its overall performance after the
update, but unfortunately, he wasn't able to give us these information.

However OTA or (Over-The-Air) Update is not possible

Developers and experts from the said group warned that it may be risky to update your phone to JB on your own.

"The update is a long way process and too complicated, It involves
repartioning your memory, and some nerdy stuff."--- says one of them.

Devs and experts promised that they may be able to help users in
updating their device if they have completed everything that they are
working on to make sure that Jelly Bean will be accessible to everyone,
especially users having no CM Service Centers near them as well as those
who do not have the luxury of time visiting one.Tomorrow is "D-day" (the day), June 1 2013

June 1 will be the final verdict, to tell whether the JB update is a Pop
or Flop. So don't forget to bring with you your official receipt and
warranty cards before heading to a near CM Service Center.

Rest assured that we are doing our best to become one of the first blog
site to demonstrate Flare after updating it to the Jelly Bean.

----

UPDATE: CM resumes the JB update for Flare starting on June 10. Details here- June 5 2013, 11:09 AMAS OF NOW CM CANCELLED THE June 1 UPDATE LETS JUST WAIT FOR OFFICIAL
ANNOUNCEMENT WITH REGARDS TO THE OFFICIAL STARTING DATE OF THE UPGRADE.
SO FOR NOW ITS REALLY PREMATURE TO HAVE A final verdict, whether the JB
update is a Pop or Flop. -May 31 2013, 6:45 PM----